本文整理汇总了Python中PyQt4.QtGui.QGraphicsPixmapItem.setScale方法的典型用法代码示例。如果您正苦于以下问题：Python QGraphicsPixmapItem.setScale方法的具体用法？Python QGraphicsPixmapItem.setScale怎么用？Python QGraphicsPixmapItem.setScale使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt4.QtGui.QGraphicsPixmapItem的用法示例。
在下文中一共展示了QGraphicsPixmapItem.setScale方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: paintBoundaries
# 需要导入模块: from PyQt4.QtGui import QGraphicsPixmapItem [as 别名]
# 或者: from PyQt4.QtGui.QGraphicsPixmapItem import setScale [as 别名]
def paintBoundaries(tgslicesFile, zSlice, d, boundaryData, mask, filename, swapCoordinates=False, colortable=None, penWidth=4.0):
print "* making boundary img '%s'" % filename
#b = BoundariesLayerPy(tgslicesFile=tgslicesFile, normalAxis=2, data2scene=QTransform(), swapCoordinates=True)
b = BoundariesLayer(None, 2, QTransform(), True)
n = b.normalAxis()
axis = None
if swapCoordinates:
if n == 0: axis = "z"
elif n == 1: axis = "y"
else: axis = "x"
else:
if n == 0: axis = "x"
elif n == 1: axis = "y"
else: axis = "z"
f = h5py.File(tgslicesFile, 'r')
group = "%s/%d" % (axis, zSlice)
serializedBoundaries = f[group].value
f.close()
assert d.ndim == 2
scene = QGraphicsScene()
b.setSliceNumber( zSlice )
b.setBoundaries(serializedBoundaries)
b.setColormap("tyr")
assert boundaryData.dtype == numpy.float32
assert mask.dtype == numpy.float32
b.setBoundaryData(boundaryData, boundaryData.size, boundaryData)
b.setBoundaryMask(mask, mask.size)
if colortable is not None:
b.setColormap(colortable)
print "setting pen width to be %f" % penWidth
b.setPenWidth(float(penWidth))
print "...done"
mag = 4
shape = d.shape
dBig = vigra.sampling.resizeImageNoInterpolation(d.astype(numpy.float32), (mag*shape[0], mag*shape[1]))
#dBig = dBig.swapaxes(0,1)
qimg = qimage2ndarray.gray2qimage(dBig)
#qimg = qimg.mirrored(True, False)
imgItm = QGraphicsPixmapItem(QPixmap(qimg))
imgItm.setScale(1.0/mag)
scene.addItem(imgItm)
sourceRect = QRectF(0,0,shape[1], shape[0])
targetRect = QRectF(0,0,mag*shape[1], mag*shape[0])
scene.setSceneRect(sourceRect)
scene.addItem(b)
img = QImage(targetRect.width(), targetRect.height(), QImage.Format_ARGB32);
painter = QPainter(img);
painter.setRenderHint(QPainter.Antialiasing);
scene.render(painter, targetRect, sourceRect );
img.save(filename)
painter.end()
#print "img has size ", img.width(), img.height()
img = None
painter = None
scene = None